GB1459434A - - Google Patents

Info

Publication number
GB1459434A
GB1459434A GB1656973A GB1656973A GB1459434A GB 1459434 A GB1459434 A GB 1459434A GB 1656973 A GB1656973 A GB 1656973A GB 1656973 A GB1656973 A GB 1656973A GB 1459434 A GB1459434 A GB 1459434A
Authority
GB
United Kingdom
Prior art keywords
rotor
coils
strip
detent element
april
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1656973A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMITHS
Original Assignee
SMITHS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMITHS filed Critical SMITHS
Priority to GB1656973A priority Critical patent/GB1459434A/en
Priority to JP3805374A priority patent/JPS5041011A/ja
Publication of GB1459434A publication Critical patent/GB1459434A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/125—Magnet axially facing armature
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by master-clocks
    • G04C13/08—Slave-clocks actuated intermittently
    • G04C13/10—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms
    • G04C13/11—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms with rotating armature

Abstract

1459434 Electric motors SMITHS INDUSTRIES Ltd 8 April 1974 [6 April 1973] 16569/73 Heading H2A In an electric stepping motor having a p.m. rotor and a detent element arranged to hold the rotor stationary between pulses of the current fed to the stator coils, the detent element is located within the radius of sweep of the rotor about the rotor axis. The planar air gap motor shown is intended for use in a watch and includes axially magnetized bar magnets 10 on both axial sides of four stator coils 7, the coils being adhesively secured to plastics blocks 12 bolted to a brass base-plate 4. The detent element comprises a stainless steel strip 19 secured to one of the coils. The rotor drives output gearing 20. The location of strip 19 and its low permeability prevent magnetization of the strip by an external field, e.g. the earth's field, and thus ensure reliable detent action without interference with the stepping movement of the rotor.
GB1656973A 1973-04-06 1973-04-06 Expired GB1459434A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1656973A GB1459434A (en) 1973-04-06 1973-04-06
JP3805374A JPS5041011A (en) 1973-04-06 1974-04-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1656973A GB1459434A (en) 1973-04-06 1973-04-06

Publications (1)

Publication Number Publication Date
GB1459434A true GB1459434A (en) 1976-12-22

Family

ID=10079685

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1656973A Expired GB1459434A (en) 1973-04-06 1973-04-06

Country Status (2)

Country Link
JP (1) JPS5041011A (en)
GB (1) GB1459434A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0223516A2 (en) * 1985-11-06 1987-05-27 Maghemite Inc. Magnetronic motor
GB2248728B (en) * 1990-10-12 1994-10-12 Philips Nv Drive unit comprising a stepping motor
US6034502A (en) * 1997-06-24 2000-03-07 Asulab S.A. Method for controlling a continuous rotation miniature motor
EP0993074A2 (en) * 1998-09-14 2000-04-12 Sumitomo Wiring Systems, Ltd. Connector base for a coil device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0223516A2 (en) * 1985-11-06 1987-05-27 Maghemite Inc. Magnetronic motor
EP0223516A3 (en) * 1985-11-06 1988-07-27 Maghemite Inc. Magnetronic motor
GB2248728B (en) * 1990-10-12 1994-10-12 Philips Nv Drive unit comprising a stepping motor
US6034502A (en) * 1997-06-24 2000-03-07 Asulab S.A. Method for controlling a continuous rotation miniature motor
EP0993074A2 (en) * 1998-09-14 2000-04-12 Sumitomo Wiring Systems, Ltd. Connector base for a coil device
EP0993074A3 (en) * 1998-09-14 2001-03-14 Sumitomo Wiring Systems, Ltd. Connector base for a coil device

Also Published As

Publication number Publication date
JPS5041011A (en) 1975-04-15

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed